ATMEGA161_07 datasheet(38/159 Pages) ATMEL

Il numero della parte	ATMEGA161

Spiegazioni elettronici	8-bit Microcontroller with 16K Bytes of In-System Programmable Flash

Download	159 Pages

Scroll/Zoom	100%

Produttore elettronici	ATMEL [ATMEL Corporation]

Homepage	http://www.atmel.com

Logo

38 / 159 page

38

ATmega161(L)

1228D–AVR–02/07

Timer/Counters

The ATmega161 provides three general purpose Timer/Counters – two 8-bit T/Cs and

one 16-bit T/C. Timer/Counter2 can optionally be asynchronously clocked from an exter-

nal Oscillator. This Oscillator is optimized for use with a 32.768 kHz watch crystal,

enabling use of Timer/Counter2 as a Real-time Clock (RTC). Timer/Counters 0 and 1

have individual prescaling selection from the same 10-bit prescaling timer.

Timer/Counter2 has its own prescaler. Both these prescalers can be Reset by setting

the corresponding control bits in the Special Functions IO Register (SFIOR). Refer to

page 39 for a detailed description. These Timer/Counters can either be used as a timer

with an internal clock time base or as a counter with an external pin connection, which

triggers the counting.

Timer/Counter

Prescalers

Figure 29. Prescaler for Timer/Counter0 and 1

For Timer/Counters 0 and 1, the four prescaled selections are: CK/8, CK/64, CK/256,

and CK/1024, where CK is the Oscillator clock. For the two Timer/Counters 0 and 1, CK,

external source and stop can also be selected as clock sources. Setting the PSR10 bit

in SFIOR Resets the prescaler. This allows the user to operate with a predictable pres-

caler. Note that Timer/Counter1 and Timer/Counter0 share the same prescaler and a

Prescaler Reset will affect both Timer/Counters.

PSR10

Clear

TCK1

TCK0

Codice articolo simile - ATMEGA161_07

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
ATMEL Corporation	ATMEGA161-4AC	2Mb / 134P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA161-4AI	2Mb / 134P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA161-4JC	2Mb / 134P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA161-4JI	2Mb / 134P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA161-4PC	2Mb / 134P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
ATMEL Corporation	ATMEGA16A	426Kb / 19P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA165V_091	342Kb / 19P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA169V	297Kb / 26P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA165P	363Kb / 20P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA16	320Kb / 24P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA165V	241Kb / 19P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA162V	2Mb / 325P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA165V_0608	3Mb / 337P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA165P_0611	3Mb / 368P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash
	ATMEGA169P	4Mb / 393P	8-bit Microcontroller with 16K Bytes In-System Programmable Flash